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87393496660164 = 223219891638807353
BaseRepresentation
bin10011110111101111100010…
…010100101111100011000100
3102110102201220001012110212200
4103313233202110233203010
542423323340121111124
6505512003525114500
724256654213606242
oct2367574224574304
9373381801173780
1087393496660164
1125934412580362
129975541258a30
13399c22c678aa6
141781c21399792
15a1848ab20bc9
hex4f7be252f8c4

87393496660164 has 144 divisors (see below), whose sum is σ = 236593711972800. Its totient is φ = 27120443784192.

The previous prime is 87393496660159. The next prime is 87393496660181. The reversal of 87393496660164 is 46106669439378.

It is a super-3 number, since 3×873934966601643 (a number of 43 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 87393496660092 and 87393496660101.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5519112 + ... + 14326464.

It is an arithmetic number, because the mean of its divisors is an integer number (1643011888700).

Almost surely, 287393496660164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87393496660164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118296855986400).

87393496660164 is an abundant number, since it is smaller than the sum of its proper divisors (149200215312636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87393496660164 is a wasteful number, since it uses less digits than its factorization.

87393496660164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8807634 (or 8807629 counting only the distinct ones).

The product of its (nonzero) digits is 846526464, while the sum is 72.

The spelling of 87393496660164 in words is "eighty-seven trillion, three hundred ninety-three billion, four hundred ninety-six million, six hundred sixty thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 9 12 18 19 36 38 57 76 89 114 163 171 178 228 267 326 342 356 489 534 652 684 801 978 1068 1467 1602 1691 1956 2934 3097 3204 3382 5073 5868 6194 6764 9291 10146 12388 14507 15219 18582 20292 27873 29014 30438 37164 43521 55746 58028 60876 87042 111492 130563 174084 261126 275633 522252 551266 826899 1102532 1653798 2480697 3307596 4961394 8807353 9922788 17614706 26422059 35229412 52844118 79266177 105688236 158532354 167339707 317064708 334679414 502019121 669358828 783854417 1004038242 1435598539 1506057363 1567708834 2008076484 2351563251 2871197078 3012114726 3135417668 4306795617 4703126502 5742394156 6024229452 7054689753 8613591234 9406253004 12920386851 14109379506 14893233923 17227182468 25840773702 27276372241 28218759012 29786467846 44679701769 51681547404 54552744482 59572935692 81829116723 89359403538 109105488964 127768269971 134039105307 163658233446 178718807076 245487350169 255536539942 268078210614 327316466892 383304809913 490974700338 511073079884 536156421228 766609619826 981949400676 1149914429739 1533219239652 2299828859478 2427597129449 4599657718956 4855194258898 7282791388347 9710388517796 14565582776694 21848374165041 29131165553388 43696748330082 87393496660164